com.google.code.trapo.controller.TopicsController.java Source code

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Here is the source code for com.google.code.trapo.controller.TopicsController.java

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/**
 * Copyright 2009 Bamboozle Who
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.trapo.controller;

import static com.google.code.trapo.web.Message.error;
import static com.google.code.trapo.web.Message.information;
import static org.springframework.web.bind.annotation.RequestMethod.POST;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import com.google.code.trapo.domain.Forum;
import com.google.code.trapo.domain.Topic;
import com.google.code.trapo.persistence.ForumRepository;
import com.google.code.trapo.persistence.TopicRepository;

/**
 * @author Bamboozle Who
 * 
 * @since 23/10/2009
 */
@Controller
@Transactional
public class TopicsController extends AbstractController<Topic> {

    @Autowired
    private ForumRepository forumRepository;
    @Autowired
    private TopicRepository topicRepository;

    @RequestMapping("/topic/create")
    public String create(String id, Model model) {
        Forum forum = forum(id);
        if (!forum.isOpen()) {
            model.addAttribute("message",
                    error("You can't post in this forum. It is not open or it does not exists."));
            return "redirect:/view/forums/list";
        }
        model.addAttribute("forum", forum);
        model.addAttribute("topic", new Topic());
        return "topics/create";
    }

    @RequestMapping(value = { "/topic/save", "/topic/update" }, method = POST)
    public String save(@ModelAttribute("topic") @Valid Topic topic, BindingResult errors, Model model) {
        if (errors.hasErrors()) {
            model.addAttribute("forum", forum(topic.getForum().getId()));
            model.addAttribute("message", error("Oops, there are some errors in form"));
            return "topics/create";
        }
        if (exists(topic)) {
            topicRepository.update(topic);
            model.addAttribute("message", information("Topic was updated"));
        } else {
            topicRepository.add(topic);
            model.addAttribute("message", information("New Topic was created"));
        }
        model.addAttribute("forum", forum(topic.getForum()));
        model.addAttribute("topic", topic);
        return "topics/show";
    }

    @RequestMapping({ "/topic/{title}" })
    public String show(@PathVariable String title, Model model) {
        Topic topic = topic(title);
        if (topic == null) {
            model.addAttribute("message", "Topic with title " + title + " not found");
            return "redirect:/view/forums/list";
        }
        model.addAttribute("topic", topic);
        model.addAttribute("forum", topic.getForum());
        return "topics/show";
    }

    protected void setForumRepository(ForumRepository forumRepository) {
        this.forumRepository = forumRepository;
    }

    protected void setTopicRepository(TopicRepository topicRepository) {
        this.topicRepository = topicRepository;
    }

    private Forum forum(Forum forum) {
        return forum(forum.getId());
    }

    private Forum forum(String id) {
        Forum forum = this.forumRepository.get(id);
        return forum != null ? forum : new Forum().close();
    }

    private Topic topic(String title) {
        Topic topic = this.topicRepository.byTitle(title);
        return topic;
    }

}